DEVICE FOR THE AXIAL LOCKING OF A GUIDE SHAFT BEARING IN A TURBOMACHINE

摘要

Guide shaft bearing comprising an internal ring mounted on a cylindrical contact surface of a shaft and means for the axial locking of the ring comprising a ring mounted sliding on the cylindrical contact surface and an annular rib made of shape memory material mounted in two annular grooves of the cylindrical contact surface and of the ring, the annular rib being able to expand radially by shape memory effect when it is subjected to a temperature greater than a transition temperature of its material to pass to a locking position of the ring on the cylindrical contact surface.